§ 24.30.045. Wetland buffers—Standard width.

Table 24.30-1 identifies the standard buffer widths. Buffer widths are specified for both water quality and habitat protection. The widest of the applicable buffers under habitat and water quality applies.

Table 24.30-1. Standard Wetland Buffer Widths

The Larger of the Buffers for Habitat and Water Quality Applies
BUFFER TO PROTECT HABITAT
Rating for habitat from the wetland rating form under the Washington State Wetland Rating System for Western Washington, 2014.	3 L,L,L	3* L,L,L	4 M,L,L	5 M,M,L	5 H,L,L	6 M,M,M	6 H,M,L	7 H,M,M	7 H,H,L	8 H,H,M	9 H,H,H
Buffer width for habitat for all wetlands except estuarine wetlands and coastal lagoons	100'	120'	140'	160'	180'	200'	220'	240'	260'	280'	300'
Buffer width with mitigation under 24.30.050 TCC	100'	100'	105'	120'	135'	150'	165'	180'	195'	210'	225'
Buffer width for estuarine wetlands and coastal lagoons	220'
BUFFER TO MAINTAIN WATER QUALITY
Wetlands of high conservation value, bogs, and wetlands containing sensitive plant species documented by the DNR Natural Heritage Program	250'
Wetlands that rate 3 for habitat, score 7 or less for water quality, are less than 10,000 square feet in size and are not a functional part of a mosaic wetland, do not support priority wildlife species, and do not drain to a stream or a Category I or II wetland	50'

 

*  Wetlands with habitat rating of 3 and a high value water quality score of 8 or 9 using Ecology's 2014 Wetland Rating System for Western Washington.

(Ord. No. 14773, § 3(Att. B), 7-24-2012; Ord. No. 15291, § 1(Att. A), 5-10-2016)